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# color-animation.qml Example File

declarative/animation/basics/color-animation/qml/color-animation/color-animation.qml

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
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     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
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     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
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     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
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     import QtQuick 1.0
     import Qt.labs.particles 1.0

     Item {
         id: window
         width: 640; height: 480

         // Let's draw the sky...
         Rectangle {
             anchors { left: parent.left; top: parent.top; right: parent.right; bottom: parent.verticalCenter }
             gradient: Gradient {
                 GradientStop {
                     position: 0.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "DeepSkyBlue"; to: "#0E1533"; duration: 5000 }
                         ColorAnimation { from: "#0E1533"; to: "DeepSkyBlue"; duration: 5000 }
                     }
                 }
                 GradientStop {
                     position: 1.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "SkyBlue"; to: "#437284"; duration: 5000 }
                         ColorAnimation { from: "#437284"; to: "SkyBlue"; duration: 5000 }
                     }
                 }
             }
         }

         // the sun, moon, and stars
         Item {
             width: parent.width; height: 2 * parent.height
             NumberAnimation on rotation { from: 0; to: 360; duration: 10000; loops: Animation.Infinite }
             Image {
                 source: "images/sun.png"; y: 10; anchors.horizontalCenter: parent.horizontalCenter
                 rotation: -3 * parent.rotation
             }
             Image {
                 source: "images/moon.png"; y: parent.height - 74; anchors.horizontalCenter: parent.horizontalCenter
                 rotation: -parent.rotation
             }

             Particles {
                 x: 0; y: parent.height/2; width: parent.width; height: parent.height/2
                 source: "images/star.png"; angleDeviation: 360; velocity: 0
                 velocityDeviation: 0; count: parent.width / 10; fadeInDuration: 2800
                 SequentialAnimation on opacity {
                     loops: Animation.Infinite
                     NumberAnimation { from: 0; to: 1; duration: 5000 }
                     NumberAnimation { from: 1; to: 0; duration: 5000 }
                 }
             }

         }

         // ...and the ground.
         Rectangle {
             anchors { left: parent.left; top: parent.verticalCenter; right: parent.right; bottom: parent.bottom }
             gradient: Gradient {
                 GradientStop {
                     position: 0.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "ForestGreen"; to: "#001600"; duration: 5000 }
                         ColorAnimation { from: "#001600"; to: "ForestGreen"; duration: 5000 }
                     }
                 }
                 GradientStop { position: 1.0; color: "DarkGreen" }
             }
         }
     }